Homework Answers
4. Product is distilled from the reaction mixture to sparate the products and to remove the impurities as impurities are generally insoluble and different components have have different boiling point. Distillation process involves the boiling.
Add Answer to:
4. Why is the product distilled from the reaction mixture as it is generated in today's...
1. In today's experiment, tube 1 represented the blank. Why did we use a complex mixture...
1. In today's experiment, tube 1 represented the blank. Why did we use a complex mixture for a blank instead of just water? (3 points)
In today's experiment you will synthesize the a,ß-unsaturated ketone from 3- nitrobenzaldehyde and acetophenone via an...
In today's experiment you will synthesize the a,ß-unsaturated ketone from 3- nitrobenzaldehyde and acetophenone via an aldol condensation. Once the aldol product forms, the reaction spontaneously dehydrates to the conjugated enone. This reaction fulfills some of the principles of green chemistry in that it has high atom economy, produces water as the only major byproduct, and uses ethanol as a non-toxic solvent. ON NaOH Etон Ph Which aldehyde will work better in this reaction as an electrophile: 4-cyanobenzaldehyde or 4-methoxybenzaldehyde?...
4) A pair of students fractionally distilled a 2:1 mixture of hexane and heptane while another...
4) A pair of students fractionally distilled a 2:1 mixture of hexane and heptane while another pair fractionally distilled a 1:2 mixture of hexane and cyclohexane. Which pair achieved a more complete separation of the two components? Explain briefly by considering the given boiling points - Hexane: 60°C; Cyclohexane:80°C; and Heptane: 98°C. (2 points)
1- Why are the solutions used in this laboratory made with distilled water? 2- What is...
1- Why are the solutions used in this laboratory made with distilled water? 2- What is the meaning and application of solubility product in this experiment? please try to answer any general answer
often conducted at reflux? What would be the result of reaction in a round-bottom flask or...
often conducted at reflux? What would be the result of reaction in a round-bottom flask or Erlenmeyer flask with- 1. Define the term "reflux." 2. Why are reactions often conducted at reflux simply boiling this reaction in a round-bottom flask out a reflux condenser? 3. Why must the n-butyl acetate product be rigorously dried prior to in analyor the role of the sodium iodide in today's experiment? Why is only a tiny amount needed? 5. Propose mechanisms for the formation...
Question 4: a.) If you had an incomplete reaction and some cyclohexanol distilled over with your...
Question 4: a.) If you had an incomplete reaction and some cyclohexanol distilled over with your product, how could that be determined from your IR spectrum? If your product had not been dried thoroughly, what would be seen in your IR spectrum? b.) Suppose that from IR analysis you knew that you had either unreacted cyclohexanol OR water in your product. How might you go about determining which it is?
3. A mixture of two miscible liquids with widely different boiling points is distilled. The temperature of the vapo...
3. A mixture of two miscible liquids with widely different boiling points is distilled. The temperature of the vapor is observed to plateau and then drop before rising again. Explain this temperature drop. (3 points) 4. If you doubled the length of the fractional distillation column, what would be the advantages and disadvantages? (3 points) 5. Why is better separation of two liquids achieved by slower heating of a mixture? (3 points)
6. Give the major organic product from each mixed aldol reaction. Then explain why the reaction...
6. Give the major organic product from each mixed aldol reaction. Then explain why the reaction conditions favor one product instead of generating a mixture of products. NaOH a. + Н,о "СС, NaOH b. Н.о a. LDA c. b. О H н 7. Give the curved arrow mechanism for this reaction. NaOH, H,O Н heat
5. When isolation of a product from a reaction mixture is carried out, a solvent is...
5. When isolation of a product from a reaction mixture is carried out, a solvent is generally used to extract the product before purification. What boiling point characteristic must this solvent have in order to facilitate its easy separation from the product you want to isolate?
Draw the product of the following reaction by augmenting the supplied structure. If a mixture is...
Draw the product of the following reaction by augmenting the
supplied structure. If a mixture is expected, draw the major
product. Use the NO2 group shortcut from the advanced toold tab to
draw this group.
Draw the product of the following reaction by augmenting the supplied structure. If a mixture is expected, draw the major product. Use the NO2 group shortcut from the advanced tools tab to draw this group. H3 CH3 HNO3 H2S04 CH3
1. In today's experiment, tube 1 represented the blank. Why did we use a complex mixture for a blank instead of just water? (3 points)
In today's experiment you will synthesize the a,ß-unsaturated ketone from 3- nitrobenzaldehyde and acetophenone via an aldol condensation. Once the aldol product forms, the reaction spontaneously dehydrates to the conjugated enone. This reaction fulfills some of the principles of green chemistry in that it has high atom economy, produces water as the only major byproduct, and uses ethanol as a non-toxic solvent. ON NaOH Etон Ph Which aldehyde will work better in this reaction as an electrophile: 4-cyanobenzaldehyde or 4-methoxybenzaldehyde?...
4) A pair of students fractionally distilled a 2:1 mixture of hexane and heptane while another pair fractionally distilled a 1:2 mixture of hexane and cyclohexane. Which pair achieved a more complete separation of the two components? Explain briefly by considering the given boiling points - Hexane: 60°C; Cyclohexane:80°C; and Heptane: 98°C. (2 points)
often conducted at reflux? What would be the result of reaction in a round-bottom flask or Erlenmeyer flask with- 1. Define the term "reflux." 2. Why are reactions often conducted at reflux simply boiling this reaction in a round-bottom flask out a reflux condenser? 3. Why must the n-butyl acetate product be rigorously dried prior to in analyor the role of the sodium iodide in today's experiment? Why is only a tiny amount needed? 5. Propose mechanisms for the formation...
3. A mixture of two miscible liquids with widely different boiling points is distilled. The temperature of the vapor is observed to plateau and then drop before rising again. Explain this temperature drop. (3 points) 4. If you doubled the length of the fractional distillation column, what would be the advantages and disadvantages? (3 points) 5. Why is better separation of two liquids achieved by slower heating of a mixture? (3 points)
6. Give the major organic product from each mixed aldol reaction. Then explain why the reaction conditions favor one product instead of generating a mixture of products. NaOH a. + Н,о "СС, NaOH b. Н.о a. LDA c. b. О H н 7. Give the curved arrow mechanism for this reaction. NaOH, H,O Н heat
5. When isolation of a product from a reaction mixture is carried out, a solvent is generally used to extract the product before purification. What boiling point characteristic must this solvent have in order to facilitate its easy separation from the product you want to isolate?
Draw the product of the following reaction by augmenting the
supplied structure. If a mixture is expected, draw the major
product. Use the NO2 group shortcut from the advanced toold tab to
draw this group.
Draw the product of the following reaction by augmenting the supplied structure. If a mixture is expected, draw the major product. Use the NO2 group shortcut from the advanced tools tab to draw this group. H3 CH3 HNO3 H2S04 CH3
Most questions answered within 3 hours.
-
Where is the error in this code sequence?
String s1 = "Hello";
String s2 = "ello";...
asked 11 months ago -
Financial data for Joel de Paris, Inc., for last year
follow:
Joel de Paris, Inc.
Balance...
asked 11 months ago -
Consider this reaction:
Al2(SO4)3 (aq)+ BaCl3
(aq) Al2Cl6 (aq)- +
3BaSO4(s) . What is the...
asked 11 months ago -
Suppose that Savneet is considering increasing her
recent random sample from 20 car rentals to 40...
asked 11 months ago -
Trucks arrive at an unloading terminal at an average rate of 120
per hour.
Trucks arrive...
asked 11 months ago -
Why are methanol and ethanol completely soluble in water while
octanol is not very little soluble....
asked 11 months ago -
A facilities manager at a university reads in a research report
that the mean amount of...
asked 11 months ago -
When the CuSO4 is rehydrated by adding water to the anhydrous
compound, is this an endothermic...
asked 11 months ago -
A ray of sunlight is passing from diamond into crown glass; the
angle of incidence is...
asked 11 months ago -
A block of mass 0.249 kg is placed on top of a light, vertical
spring of...
asked 11 months ago -
how do the kidneys compensate in the presences of acidosis
a) trigger hyperventilate
b) reserve acid...
asked 11 months ago -
Question 501 pts
The rental rate of capital to the firm increases. Which of the
following...
asked 11 months ago